You already are using ipchains, just log something more:
# log all tcp in chain int-ext
ipchains -I int-ext -p TCP -l
# log all udp in chain int-ext
ipchains -I int-ext -p UDP -l
# just log all tcp input on any interface
ipchains -I input -p TCP -l
# more examples at your own, don't use all at once ;-)
> Date: Mon, 24 Jul 2000 14:03:38 -0700
> From: Stan Kaufman <[EMAIL PROTECTED]>
> Subject: specifying ports/services to let thru in default-deny packet filter?
>
> Is there some way to determine what kinds of additional connections a
> web site tries to open when you hit a page so that you can determine
> which services you want to let through in a packet filtering firewall?
HvS
:-)
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